Not sure what the question is. The scriptures refer to two parts to the Second coming.
1. His coming as a thief in the night where only true Christians are "caught up" by the Bride Groom (1 Thess 4:16 - 5:2). We go up!
2. His coming to the Mt. of Olives where every eye shall see him! Jesus comes down with us!(Revelation 19, Zechariah 14)
exactly. The reason Paul doesn't mention this 19th century rapture idea as occuring before the appearance of the antichrist and before the second coming is simple: it never entered into his mind that anyone would believe Christ would rapture His Church before the final Eschaton
In the apocalypse, that is referred to as the battle with Gog and Magog, Christians will participate in that confrontation because there will be no secret rapture before it. Our comfort rests in Him who will emerge from that confrontation as the Victor.
THAT is the reassurance Paul offers, not the promise of an escape from the great Tribulation.